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Journal Articles

Machine-Learnt Turbulence Closures for Low-Pressure Turbines With Unsteady Inflow Conditions

H. D. Akolekar, R. D. Sandberg, N. Hutchins, V. Michelassi, G. Laskowski
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2019, 141(10): 101009.
Paper No: TURBO-18-1305
https://doi.org/10.1115/1.4043907
Published Online: September 30, 2019
View Article titled, Machine-Learnt Turbulence Closures for Low-Pressure Turbines With Unsteady Inflow Conditions
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Topics: Errors, Flow (Dynamics), Physics, Turbulence, Wakes, Inflow, Approximation, Locks (Waterways), Model development, Pressure
Journal Articles

Development and Use of Machine-Learnt Algebraic Reynolds Stress Models for Enhanced Prediction of Wake Mixing in Low-Pressure Turbines

H. D. Akolekar, J. Weatheritt, N. Hutchins, R. D. Sandberg, G. Laskowski, V. Michelassi
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. April 2019, 141(4): 041010.
Paper No: TURBO-18-1280
https://doi.org/10.1115/1.4041753
Published Online: March 7, 2019
View Article titled, Development and Use of Machine-Learnt Algebraic Reynolds Stress Models for Enhanced Prediction of Wake Mixing in Low-Pressure Turbines
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Topics: Flow (Dynamics), Pressure, Reynolds-averaged Navier–Stokes equations, Stress, Turbines, Wakes, Blades, Reynolds number, Turbulence, Algebra
Journal Articles

On the Identification and Decomposition of the Unsteady Losses in a Turbine Cascade

D. Lengani, D. Simoni, R. Pichler, R. D. Sandberg, V. Michelassi, F. Bertini
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. March 2019, 141(3): 031005.
Paper No: TURBO-18-1252
https://doi.org/10.1115/1.4042164
Published Online: January 16, 2019
View Article titled, On the Identification and Decomposition of the Unsteady Losses in a Turbine Cascade
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Topics: Blades, Boundary layers, Cascades (Fluid dynamics), Flow (Dynamics), Pressure, Suction, Turbines, Turbulence, Wakes, Dynamics (Mechanics)
Journal Articles

Applying Machine Learnt Explicit Algebraic Stress and Scalar Flux Models to a Fundamental Trailing Edge Slot

R. D. Sandberg, R. Tan, J. Weatheritt, A. Ooi, A. Haghiri, V. Michelassi, G. Laskowski
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. October 2018, 140(10): 101008.
Paper No: TURBO-18-1202
https://doi.org/10.1115/1.4041268
Published Online: September 28, 2018
View Article titled, Applying Machine Learnt Explicit Algebraic Stress and Scalar Flux Models to a Fundamental Trailing Edge Slot
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Topics: Anisotropy, Heat flux, Large eddy simulation, Reynolds-averaged Navier–Stokes equations, Scalars, Stress, Tensors, Turbulence, Eddies (Fluid dynamics), Algebra
Proceedings Papers

Applying Machine Learnt Explicit Algebraic Stress and Scalar Flux Models to a Fundamental Trailing Edge Slot

R. D. Sandberg, R. Tan, J. Weatheritt, A. Ooi, A. Haghiri, V. Michelassi, G. Laskowski
Proc. ASME. GT2018, Volume 5A: Heat Transfer, V05AT12A007, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75444
https://doi.org/10.1115/GT2018-75444
View Paper titled, Applying Machine Learnt Explicit Algebraic Stress and Scalar Flux Models to a Fundamental Trailing Edge Slot
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Topics: Algebra, Machinery, Scalars, Stress, Heat flux, Reynolds-averaged Navier–Stokes equations, Algorithms, Anisotropy, Diffusion (Physics), Geometry
Proceedings Papers

LES and RANS Analysis of the End-Wall Flow in a Linear LPT Cascade: Part I — Flow and Secondary Vorticity Fields Under Varying Inlet Condition

R. Pichler, Yaomin Zhao, R. D. Sandberg, V. Michelassi, R. Pacciani, M. Marconcini, A. Arnone
Proc. ASME. GT2018, Volume 2B: Turbomachinery, V02BT41A020, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-76233
https://doi.org/10.1115/GT2018-76233
View Paper titled, LES and RANS Analysis of the End-Wall Flow in a Linear LPT Cascade: Part I — Flow and Secondary Vorticity Fields Under Varying Inlet Condition
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Topics: Cascades (Fluid dynamics), Flow (Dynamics), Reynolds-averaged Navier–Stokes equations, Vorticity, Boundary layers, Blades, Design, Vortices, Computational fluid dynamics, Engineering simulation
Proceedings Papers

Assessment of Grid Resolution Requirements for Accurate Simulation of Disparate Scales of Turbulent Flow in Low-Pressure Turbines

R. Pichler, R. D. Sandberg, V. Michelassi
Proc. ASME. GT2016, Volume 2C: Turbomachinery, V02CT39A030, June 13–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: GT2016-56858
https://doi.org/10.1115/GT2016-56858
View Paper titled, Assessment of Grid Resolution Requirements for Accurate Simulation of Disparate Scales of Turbulent Flow in Low-Pressure Turbines
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Topics: Pressure, Resolution (Optics), Simulation, Turbines, Turbulence, Kinetic energy, Blades, Wakes, Cascades (Fluid dynamics), Computer simulation
Journal Articles

Investigation of the Accuracy of RANS Models to Predict the Flow Through a Low-Pressure Turbine

R. Pichler, R. D. Sandberg, V. Michelassi, R. Bhaskaran
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Research-Article
J. Turbomach. December 2016, 138(12): 121009.
Paper No: TURBO-16-1076
https://doi.org/10.1115/1.4033507
Published Online: June 22, 2016
View Article titled, Investigation of the Accuracy of RANS Models to Predict the Flow Through a Low-Pressure Turbine
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Topics: Flow (Dynamics), Pressure, Reynolds-averaged Navier–Stokes equations, Turbines, Turbulence, Modeling, Errors, Fluctuations (Physics), Computational fluid dynamics, Computer simulation
Proceedings Papers

Investigation of the Accuracy of RANS Models to Predict the Flow Through a Low-Pressure Turbine

R. Pichler, R. D. Sandberg, V. Michelassi, R. Bhaskaran
Proc. ASME. GT2015, Volume 2B: Turbomachinery, V02BT39A036, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43446
https://doi.org/10.1115/GT2015-43446
View Paper titled, Investigation of the Accuracy of RANS Models to Predict the Flow Through a Low-Pressure Turbine
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Topics: Flow (Dynamics), Pressure, Reynolds-averaged Navier–Stokes equations, Turbines, Turbulence, Modeling, Errors, Fluctuations (Physics), Computer simulation, Kinetic energy